The junta, under coup-leading Army Chief Prayut Chan-O-Cha, has pegged its legitimacy to improving the economy after months of political protests froze government spending, scared off tourists and battered consumer spending.

Between April and June the economy crept back to life with 0.9 percent growth after shrinking a revised 1.9 percent in the preceding three months, the National Economic and Social Development Board reported.

On a year-on-year basis, the economy grew 0.4 percent, NESDB said.

Since seizing power on May 22, Prayut has opened the coffers -- pledging to kick-start stalled investment projects, including major train and road links, and paying state debts to rice farmers to help spur agriculture.

"Nonetheless, the economy continues to face several headwinds, such as high household debt burdens. As such, growth is unlikely to return to its trend rate anytime soon."

The kingdom had enjoyed a reputation as "Teflon Thailand" for its enviable record of economic resilience in the face of the last eight years of political upheaval as well as devastating floods in 2011.